Tumbler switch



E/ TOR.

May 21, 1963 KAZUMA TATElSHl TUMBLER SWITCH Filed Aug. 4. 1960 UnitedStates Patent 3,090,846 TUMBLER SWITCH Kazuma Tateishi, 21-ehomeNarutaki Harukieho, Kyoto City, Japan Filed Aug. 4, 1960, Ser. No.47,440 1 Claim. (Cl. 200-67) This invention relates to a tumbler switch.

According to this invention, a button for actuating a spring carrying amovable contact and a frame for supporting said spring are previouslyassembled into one unit and said unit is inserted into an open mouthedcasing so as to form a tumbler switch. In this way, the construction ofthe tumbler switch can be much simplified.

In the accompanying drawings:

FIG. 1 is an inside view of the tumbler switch according to thisinvention,

FIG. 2 is a side view,

FIG. 3 is a sectional view through the line AA in FIG. 1,

FIG. 4 is a side view of the switch,

FIG. 5 is a front view of the supporting frame,

FIG. 6 is a side view of the casing, and

FIG. 7 shows the flat spring.

1 is a flat spring carrying a movable contact 19. The lower end of saidspring is riveted at the lower end 3 of a supporting frame 2 and theupper ends or shoulders 1' of said spring are forced to engage withgrooves 5 formed in the bottom of the upper portion of said frame so asto curve the spring 1 slightly as shown in FIG. 1, while the loop 7riveted at the upper end of the spring 1 protrudes from the opening 6situated between the grooves 5 and engages with the central recess 10formed at the bottom of said button.

The upper portion 4 of the frame 2 is provided with a pair of uprights11 to which the inverted U-shaped shaft 9 is pivoted so as to make thebutton 8 swingable.

The middle portion 12 of the frame 2 is provided with an opening 13 inwhich a terminal 21 is to be threaded. Further, the middle portion 12 isprovided with downwardly extending projections 14 on the sides thereof.The casing 15 of a suitable insulating material is provided with windows16. In each side of said window, a groove 17 is formed to receive theprojection 14.

The assemblage consisting of the button 8, the flat spring 2 and itssupporting frame 1 is then inserted into the open mouthed casing 15 withthe projections 14 sliding in the grooves 17. Next, the lower exposedportions of 3,090,846 Patented May 21, 1963 the projections 14 are bentso as to connect the assemblage and the casing 15- securely. Then, aterminal 21 is threaded into the opening 13 and the other frame 18supporting a stationary contact 20 is also inserted in the casing 15 inthe same manner as the frame 2 and the other terminal 22 is threadedinto the frame 2.

The operation of this switch is as follows:

Assuming that the movable contact 19 is in contact with the stationarycontact 20 as shown in FIG. 1. By turning the button 8 in a clockwisedirection, the spring 1 snaps in the opposite direction whereby thecontact between the contacts 19 and 20 will be broken. The spring 1 willmaintain its position upon the removal of hand from the button 8.

Turning the button 8 to the opposite direction causes the spring 1 tosnap back to its initial position and the movable contact 19 will bebrought into contact with the stationary contact 20 again.

As is clear from the above, the assemblage of the parts of this switchis very simple.

I claim:

A tumbler switch comprising, a frame, a flat spring carrying a movablecontact, one end of the spring being attached to the frame, the framehaving grooveslocated remotely from the last-mentioned end of thespring, the spring having shoulders adjacent to its opposite end andwhich shoulders engage with the grooves, the frame having an aperturelocated between the grooves, the spring having an end part extendingthrough said aperture and projecting beyond the frame, a U-shaped loopmember fitting over and embracing said end part of the spring, saidU-shaped member having a rounded bight and having legs riveted to thespring, an inverted U-shaped shaft, a rocking button mounted on saidshaft over the loop, the upper portion of the frame having spaced lugsin which said shaft is mounted, said button having a groove in its undersurface in which the rounded bight of the loop member snugly fits belowsthe shaft.

References Cited in the file of this patent UNITED STATES PATENTS2,074,132 Rich Mar. 16, 1937 2,354,635 Harmon July 25, 1944 2,501,497Clark Mar. 21, 1950 FOREIGN PATENTS 956,154 France July 18, 19491,115,014 France Dec. 26-, 1955

